Number of partitions of {1,...,n} into block sizes not a multiple of 4.

A115276

Number of partitions of {1,...,n} into block sizes not a multiple of 4.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =5a(4) =14a(5) =47a(6) =173a(7) =702a(8) =3124a(9) =14901a(10) =76405a(11) =417210a(12) =2411466a(13) =14731095a(14) =94573911a(15) =636575050a(16) =4480990936a(17) =32887804361a(18) =251236573561

External references