This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A072550 #16 Jan 20 2021 14:56:03 %S A072550 1,1,2,2,1,1,2,1,1,0,1,1,0,1,1,2,0,2,1,1,0,1,1,1,2,1,1,1,1,1,1,3,1,1, %T A072550 1,1,2,1,1,1,1,1,1,1,1 %N A072550 Number of Vice Presidents under n-th President of U.S.A. %C A072550 These terms currently add up to two more than the total number of Vice Presidents who have already completed their terms because (to date) two VPs were VPs for two different (consecutive) Presidents. %D A072550 "U.S. Presidents, Vice Presidents, Congresses", The World Almanac and Book of Facts (2000 edition). New Jersey: Primedia Reference Inc., 1999. pp. 503-504. %e A072550 a(3)=2 because Thomas Jefferson, the third President, had two Vice Presidents (a different one during each of his presidential terms of office). a(22)=1 because Grover Cleveland, the 22nd President, had one Vice President while he was the 22nd President. a(24)=1 because Grover Cleveland, the 24th President also, had one Vice President while he was the 24th President (this VP happened to be a different person). %Y A072550 Cf. A008745 (Year of birth of n-th President of U.S.A.). %Y A072550 Cf. A084989, A090232, A147653. %K A072550 nonn,fini %O A072550 1,3 %A A072550 _Rick L. Shepherd_, Aug 05 2002 %E A072550 a(43) from _Rick L. Shepherd_, Jan 20 2009 %E A072550 a(44) from _Jon E. Schoenfield_, Jan 20 2017 %E A072550 a(45) from _Jon E. Schoenfield_, Jan 20 2021