| Centered Heptagonal Number |
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:. This can also be calculated by multiplying the Triangular Number for (''n'' - 1) by 7, then adding 1. The first few centered heptagonal numbers are 1 , 8 , 22 , 43 , 71 , 106 , 148, 197, 253, 316, 386, 463, 547, 638, 736, 841, 953 Centered heptagonal numbers alternate parity in the pattern odd-even-even-odd. CENTERED HEPTAGONAL PRIME A centered heptagonal prime is a centered heptagonal number that is Prime . The first few centered heptagonal primes are 43, 71, 197, 463, 547, 953, 1471, 1933, .... See also regular Heptagonal Number . |
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