This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A321200 Alternating row sums of Riordan triangle A321198. 2
 1, -1, 2, -4, 8, -18, 39, -89, 204, -472, 1110, -2616, 6231, -14909, 35861, -86705, 210364, -512480, 1252350, -3069638, 7544818, -18589202, 45907708, -113608590, 281698359, -699748003, 1741102844, -4338995332, 10828981851, -27063384783, 67722954114, -169674183372, 425590855116, -1068654838488 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS The row sums of triangle A321198 are given in A321199. LINKS FORMULA a(n) = Sum_{k=0..n} A321198(n, k), n >= 0. G.f.: f(x)/(1 + x*f(x)), with f(x) = F^{[-1]}(x)/x = Sum_{n >= 0} (-1)^(n+1)*A001005(n)*x^n, where F^{[-1]}(x) is the compositional inverse of F(y) = y/(1 + y^2 - y^3) (see A077961 for F(y)/y). CROSSREFS Cf. A001005, A077961, A321198, A321199. Sequence in context: A110110 A300221 A233437 * A056362 A086585 A052910 Adjacent sequences:  A321197 A321198 A321199 * A321201 A321202 A321203 KEYWORD sign,easy AUTHOR Wolfdieter Lang, Nov 12 2018 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified March 19 11:10 EDT 2019. Contains 321329 sequences. (Running on oeis4.)