This site is supported by donations to The OEIS Foundation.

 Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing. Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A145162 G.f. A(x) satisfies A(x/A(x)^4) = 1/(1-x). 6
 1, 1, 5, 51, 757, 14058, 303443, 7313188, 192096189, 5413972155, 161972306602, 5104569475976, 168500227127871, 5800706769824992, 207552636468976072, 7697809237540240440, 295284422299359774761, 11693774821978063710405 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS FORMULA G.f. satisfies: 1 - 1/A(x) = x*A( 1 - 1/A(x) )^4. Self-convolution square yields A145163. Self-convolution 4th power yields A145164. PROG (PARI) {a(n)=local(A=1+x+x*O(x^n), B); for(n=0, n, B=serreverse(x/A^4); A=1/(1-B)); polcoeff(A, n)} CROSSREFS Cf. A145163 (A^2), A145164 (A^4); A088713, A145158, A145160, A145165, A145167. Sequence in context: A190734 A154886 A268138 * A187235 A318192 A299435 Adjacent sequences:  A145159 A145160 A145161 * A145163 A145164 A145165 KEYWORD nonn AUTHOR Paul D. Hanna, Oct 03 2008 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 December 15 09:05 EST 2019. Contains 329995 sequences. (Running on oeis4.)