Concatenation of sum n+(n+1) and product n*(n+1) in decimal.

Terms

a(0) =10a(1) =32a(2) =56a(3) =712a(4) =920a(5) =1130a(6) =1342a(7) =1556a(8) =1772a(9) =1990a(10) =21110a(11) =23132a(12) =25156a(13) =27182a(14) =29210a(15) =31240a(16) =33272a(17) =35306a(18) =37342a(19) =39380a(20) =41420a(21) =43462a(22) =45506a(23) =47552a(24) =49600a(25) =51650a(26) =53702a(27) =55756a(28) =57812a(29) =59870