Diagonal sum of generalized Pascal triangle; (10^n,1).

Terms

a(0) =1a(1) =1a(2) =11a(3) =12a(4) =113a(5) =125a(6) =1138a(7) =1263a(8) =11401a(9) =12664a(10) =114065a(11) =126729a(12) =1140794a(13) =1267523a(14) =11408317a(15) =12675840a(16) =114084157a(17) =126759997a(18) =1140844154a(19) =1267604151a(20) =11408448305a(21) =12676052456a(22) =114084500761a(23) =126760553217