The r-th term of the n-th row of the following array contains the sum of r successively decreasing integers beginning from n. 0 < r <= n. Sequence contains the leading diagonal.
A110427
The r-th term of the n-th row of the following array contains the sum of r successively decreasing integers beginning from n. 0 < r <= n. Sequence contains the leading diagonal.
Terms
- a(0) =1a(1) =1a(2) =-3a(3) =-14a(4) =-35a(5) =-69a(6) =-119a(7) =-188a(8) =-279a(9) =-395a(10) =-539a(11) =-714a(12) =-923a(13) =-1169a(14) =-1455a(15) =-1784a(16) =-2159a(17) =-2583a(18) =-3059a(19) =-3590a(20) =-4179a(21) =-4829a(22) =-5543a(23) =-6324a(24) =-7175a(25) =-8099a(26) =-9099a(27) =-10178a(28) =-11339a(29) =-12585
External references
- oeis: A110427