Number of partitions of n into parts not of the form 21k, 21k+2 or 21k-2. Also number of partitions with 1 part of size 1 and differences between parts at distance 9 are greater than 1.

A035980

Number of partitions of n into parts not of the form 21k, 21k+2 or 21k-2. Also number of partitions with 1 part of size 1 and differences between parts at distance 9 are greater than 1.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =3a(4) =4a(5) =6a(6) =8a(7) =11a(8) =15a(9) =20a(10) =26a(11) =35a(12) =45a(13) =58a(14) =75a(15) =96a(16) =121a(17) =154a(18) =192a(19) =241a(20) =300a(21) =372a(22) =458a(23) =566a(24) =693a(25) =847a(26) =1032a(27) =1255a(28) =1518a(29) =1837

External references