Number of compositions (ordered partitions) of n into hexagonal pyramidal numbers (A002412).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =2a(8) =3a(9) =4a(10) =5a(11) =6a(12) =7a(13) =8a(14) =10a(15) =13a(16) =17a(17) =22a(18) =28a(19) =35a(20) =43a(21) =53a(22) =67a(23) =85a(24) =108a(25) =137a(26) =173a(27) =217a(28) =271a(29) =340