This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A060204 Square pyramorphic numbers: suppose the k-th square pyramidal number S(k) (A000330) ends in k; sequence gives value of S(k). 1
 1, 55, 5525, 22140, 93665, 173880, 1378160, 3822225, 19096385, 21413400, 58695560, 81575625, 161553785, 170986800, 295372960, 555371185, 5595682560, 6032742625, 21341334000, 46478345185, 94121656560, 96947076625 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 REFERENCES C. Pickover, Wonders of Numbers, Oxford University Press, NY, 2001, pp. 158-160. LINKS C. A. Pickover, "Wonders of Numbers, Adventures in Mathematics, Mind and Meaning," Zentralblatt review EXAMPLE 55 is square pyramorphic because it is the 5th square pyramidal number and ends in 5. 173880 is square pyramorphic because it is the 80th square pyramidal number and ends in 80. CROSSREFS A093534 gives values of k. Cf. A000330. Sequence in context: A119083 A037156 A116110 * A231783 A114049 A028471 Adjacent sequences:  A060201 A060202 A060203 * A060205 A060206 A060207 KEYWORD nonn AUTHOR Jason Earls, Mar 18 2001 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 October 16 14:39 EDT 2019. Contains 328096 sequences. (Running on oeis4.)