Partial sums of A072272.

Terms

a(0) =1a(1) =6a(2) =11a(3) =28a(4) =33a(5) =58a(6) =75a(7) =136a(8) =141a(9) =166a(10) =191a(11) =276a(12) =293a(13) =378a(14) =439a(15) =656a(16) =661a(17) =686a(18) =711a(19) =796a(20) =821a(21) =946a(22) =1031a(23) =1336a(24) =1353a(25) =1438a(26) =1523a(27) =1812a(28) =1873a(29) =2178