Number of compositions (ordered partitions) of n into heptagonal pyramidal numbers (A002413).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =2a(9) =3a(10) =4a(11) =5a(12) =6a(13) =7a(14) =8a(15) =9a(16) =11a(17) =14a(18) =18a(19) =23a(20) =29a(21) =36a(22) =44a(23) =53a(24) =64a(25) =78a(26) =97a(27) =121a(28) =151a(29) =188