Starting positions of strings of five '7's in the decimal expansion of Pi.

Terms

a(0) =162248a(1) =283693a(2) =322347a(3) =399579a(4) =399580a(5) =401865a(6) =427363a(7) =452071a(8) =452072a(9) =518222a(10) =788763a(11) =1006927a(12) =1006928a(13) =1039540a(14) =1059121a(15) =1109342a(16) =1143800a(17) =1269116a(18) =1543244a(19) =1571225a(20) =1589715a(21) =1764582a(22) =1846087a(23) =2008354a(24) =2264927a(25) =2309218a(26) =2309219