Pierce expansion for Euler's constant.

Terms

a(0) =1a(1) =2a(2) =6a(3) =13a(4) =21a(5) =24a(6) =225a(7) =615a(8) =17450a(9) =23228a(10) =57774a(11) =221361a(12) =522377a(13) =793040a(14) =1706305a(15) =8664354a(16) =19037086a(17) =51965160a(18) =56870701a(19) =124645388a(20) =784244500a(21) =792809072a(22) =3675221276a(23) =42108268014a(24) =53633289500a(25) =56827261536a(26) =67080647365