A145368 Row sums of triangle A145367 (S1hat(-3)) and partition array A145366 (M31hat(-3)).
1, 4, 10, 25, 43, 124, 214, 493, 979, 2032, 3706, 8377, 14695, 30004, 58030, 113029, 204883, 424312, 754306, 1467025, 2783599, 5248348, 9524662, 18925117, 33713611
Offset: 0
Formula
a(n) = Sum_{m=1..n} A145367(n,m), for n>=1.