Numbers which are both heptagonal and centered heptagonal.
A128919
Numbers which are both heptagonal and centered heptagonal.
Terms
- a(0) =1a(1) =148a(2) =21022a(3) =2984983a(4) =423846571a(5) =60183228106
External references
- oeis: A128919
A128919
Numbers which are both heptagonal and centered heptagonal.