Talk:Heptagonal number

generalized heptagonal number
The section "generalized heptagonal number" highly needs some explanation. At the moment, only a formula is presented and not much else. Bob.v.R (talk) 03:08, 20 September 2017 (UTC)
 * For the moment, I have now made this section invisible to the reader. Bob.v.R (talk) 04:43, 30 September 2017 (UTC)