Expansion of (-1 + Product_{k>=1} (1 + x^k)^k)^10.

Terms

a(0) =1a(1) =20a(2) =230a(3) =1940a(4) =13285a(5) =77944a(6) =405250a(7) =1910330a(8) =8300380a(9) =33655860a(10) =128574734a(11) =466317760a(12) =1615509765a(13) =5373215450a(14) =17230062315a(15) =53457917856a(16) =160963157005a(17) =471587847690