Number of ways to write n as an ordered sum of 7 prime powers (including 1).

Terms

a(0) =1a(1) =7a(2) =28a(3) =84a(4) =210a(5) =455a(6) =882a(7) =1569a(8) =2611a(9) =4116a(10) =6223a(11) =9093a(12) =12901a(13) =17822a(14) =24053a(15) =31759a(16) =41132a(17) =52367a(18) =65702a(19) =81326a(20) =99526a(21) =120471a(22) =144417a(23) =171493a(24) =201985a(25) =235963a(26) =273889a(27) =315805a(28) =362181a(29) =413021