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Line 1: {{No footnotes\|date=April 2020}} A '''hexagonal pyramidal number''' is a [[pyramidal number]] formed by adding the first ''n'' [[hexagonal number]]s. The first few hexagonal pyramidal numbers are: :{{num\|1}}, {{num\|7}}, {{num\|22}}, {{num\|50}}, {{num\|95}}, {{num\|161}}, {{num\|252}}, 372, 525, 715, 946, 1222, 1547, 1925 {{OEIS\|A002412}}.

Hexagonal pyramidal number: Difference between revisions